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Spanning-Tree Commands
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CLI\files\Spanning-Tree.fm
D E L L C O N F ID E N T IA L – P R E L IM I N A RY 5 / 1 5 /1 2 - F O R P R O O F O N LY
Default Configuration
The default setting is
flooding
.
Command Mode
Global Configuration mode
User Guidelines
The
filtering
and
flooding
modes are relevant when the spanning tree is
disabled globally or on a single interface.
Example
The following example defines the BPDU packet handling mode as
flooding
when the spanning tree is disabled on an interface
.
Console(config)#
spanning-tree bpdu flooding
spanning-tree bpdu (Interface)
Use the
spanning-tree bpdu
Interface Configuration (Ethernet, Port-
channel) mode command to define BPDU handling when the spanning tree
is disabled on a single interface. Use the
no
form of this command to restore
the default configuration.
Syntax
spanning-tree bpdu
{filtering | flooding}
no spanning-tree bpdu
Parameters
•
filtering
—Specifies that BPDU packets are filtered when the spanning tree
is disabled on an interface.
•
flooding
—Specifies that untagged BPDU packets are flooded
unconditionally (without applying VLAN rules) to ports with the spanning
tree disabled and BPDU handling mode of flooding. Tagged BPDU packets
are filtered.